466 lines
13 KiB
C
466 lines
13 KiB
C
|
/*
|
||
|
|
* Key writing application
|
||
|
|
*
|
||
|
|
* Copyright The Mbed TLS Contributors
|
||
|
|
* SPDX-License-Identifier: Apache-2.0
|
||
|
|
*
|
||
|
|
* Licensed under the Apache License, Version 2.0 (the "License"); you may
|
||
|
|
* not use this file except in compliance with the License.
|
||
|
|
* You may obtain a copy of the License at
|
||
|
|
*
|
||
|
|
* http://www.apache.org/licenses/LICENSE-2.0
|
||
|
|
*
|
||
|
|
* Unless required by applicable law or agreed to in writing, software
|
||
|
|
* distributed under the License is distributed on an "AS IS" BASIS, WITHOUT
|
||
|
|
* WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
|
||
|
|
* See the License for the specific language governing permissions and
|
||
|
|
* limitations under the License.
|
||
|
|
*/
|
||
|
|
|
||
|
|
#include "mbedtls/build_info.h"
|
||
|
|
|
||
|
|
#if defined(MBEDTLS_PLATFORM_C)
|
||
|
|
#include "mbedtls/platform.h"
|
||
|
|
#else
|
||
|
|
#include <stdio.h>
|
||
|
|
#include <stdlib.h>
|
||
|
|
#define mbedtls_printf printf
|
||
|
|
#define mbedtls_exit exit
|
||
|
|
#define MBEDTLS_EXIT_SUCCESS EXIT_SUCCESS
|
||
|
|
#define MBEDTLS_EXIT_FAILURE EXIT_FAILURE
|
||
|
|
#endif /* MBEDTLS_PLATFORM_C */
|
||
|
|
|
||
|
|
#if defined(MBEDTLS_PK_PARSE_C) && defined(MBEDTLS_PK_WRITE_C) && \
|
||
|
|
defined(MBEDTLS_FS_IO) && \
|
||
|
|
defined(MBEDTLS_ENTROPY_C) && defined(MBEDTLS_CTR_DRBG_C)
|
||
|
|
#include "mbedtls/error.h"
|
||
|
|
#include "mbedtls/pk.h"
|
||
|
|
#include "mbedtls/error.h"
|
||
|
|
|
||
|
|
#include "mbedtls/entropy.h"
|
||
|
|
#include "mbedtls/ctr_drbg.h"
|
||
|
|
|
||
|
|
#include <stdio.h>
|
||
|
|
#include <string.h>
|
||
|
|
#endif
|
||
|
|
|
||
|
|
#if defined(MBEDTLS_PEM_WRITE_C)
|
||
|
|
#define USAGE_OUT \
|
||
|
|
" output_file=%%s default: keyfile.pem\n" \
|
||
|
|
" output_format=pem|der default: pem\n"
|
||
|
|
#else
|
||
|
|
#define USAGE_OUT \
|
||
|
|
" output_file=%%s default: keyfile.der\n" \
|
||
|
|
" output_format=der default: der\n"
|
||
|
|
#endif
|
||
|
|
|
||
|
|
#if defined(MBEDTLS_PEM_WRITE_C)
|
||
|
|
#define DFL_OUTPUT_FILENAME "keyfile.pem"
|
||
|
|
#define DFL_OUTPUT_FORMAT OUTPUT_FORMAT_PEM
|
||
|
|
#else
|
||
|
|
#define DFL_OUTPUT_FILENAME "keyfile.der"
|
||
|
|
#define DFL_OUTPUT_FORMAT OUTPUT_FORMAT_DER
|
||
|
|
#endif
|
||
|
|
|
||
|
|
#define DFL_MODE MODE_NONE
|
||
|
|
#define DFL_FILENAME "keyfile.key"
|
||
|
|
#define DFL_DEBUG_LEVEL 0
|
||
|
|
#define DFL_OUTPUT_MODE OUTPUT_MODE_NONE
|
||
|
|
|
||
|
|
#define MODE_NONE 0
|
||
|
|
#define MODE_PRIVATE 1
|
||
|
|
#define MODE_PUBLIC 2
|
||
|
|
|
||
|
|
#define OUTPUT_MODE_NONE 0
|
||
|
|
#define OUTPUT_MODE_PRIVATE 1
|
||
|
|
#define OUTPUT_MODE_PUBLIC 2
|
||
|
|
|
||
|
|
#define OUTPUT_FORMAT_PEM 0
|
||
|
|
#define OUTPUT_FORMAT_DER 1
|
||
|
|
|
||
|
|
#define USAGE \
|
||
|
|
"\n usage: key_app_writer param=<>...\n" \
|
||
|
|
"\n acceptable parameters:\n" \
|
||
|
|
" mode=private|public default: none\n" \
|
||
|
|
" filename=%%s default: keyfile.key\n" \
|
||
|
|
" output_mode=private|public default: none\n" \
|
||
|
|
USAGE_OUT \
|
||
|
|
"\n"
|
||
|
|
|
||
|
|
#if !defined(MBEDTLS_PK_PARSE_C) || \
|
||
|
|
!defined(MBEDTLS_PK_WRITE_C) || \
|
||
|
|
!defined(MBEDTLS_FS_IO) || \
|
||
|
|
!defined(MBEDTLS_ENTROPY_C) || \
|
||
|
|
!defined(MBEDTLS_CTR_DRBG_C)
|
||
|
|
int main( void )
|
||
|
|
{
|
||
|
|
mbedtls_printf( "MBEDTLS_PK_PARSE_C and/or MBEDTLS_PK_WRITE_C and/or "
|
||
|
|
"MBEDTLS_ENTROPY_C and/or MBEDTLS_CTR_DRBG_C and/or "
|
||
|
|
"MBEDTLS_FS_IO not defined.\n" );
|
||
|
|
mbedtls_exit( 0 );
|
||
|
|
}
|
||
|
|
#else
|
||
|
|
|
||
|
|
|
||
|
|
/*
|
||
|
|
* global options
|
||
|
|
*/
|
||
|
|
struct options
|
||
|
|
{
|
||
|
|
int mode; /* the mode to run the application in */
|
||
|
|
const char *filename; /* filename of the key file */
|
||
|
|
int output_mode; /* the output mode to use */
|
||
|
|
const char *output_file; /* where to store the constructed key file */
|
||
|
|
int output_format; /* the output format to use */
|
||
|
|
} opt;
|
||
|
|
|
||
|
|
static int write_public_key( mbedtls_pk_context *key, const char *output_file )
|
||
|
|
{
|
||
|
|
int ret;
|
||
|
|
FILE *f;
|
||
|
|
unsigned char output_buf[16000];
|
||
|
|
unsigned char *c = output_buf;
|
||
|
|
size_t len = 0;
|
||
|
|
|
||
|
|
memset(output_buf, 0, 16000);
|
||
|
|
|
||
|
|
#if defined(MBEDTLS_PEM_WRITE_C)
|
||
|
|
if( opt.output_format == OUTPUT_FORMAT_PEM )
|
||
|
|
{
|
||
|
|
if( ( ret = mbedtls_pk_write_pubkey_pem( key, output_buf, 16000 ) ) != 0 )
|
||
|
|
return( ret );
|
||
|
|
|
||
|
|
len = strlen( (char *) output_buf );
|
||
|
|
}
|
||
|
|
else
|
||
|
|
#endif
|
||
|
|
{
|
||
|
|
if( ( ret = mbedtls_pk_write_pubkey_der( key, output_buf, 16000 ) ) < 0 )
|
||
|
|
return( ret );
|
||
|
|
|
||
|
|
len = ret;
|
||
|
|
c = output_buf + sizeof(output_buf) - len;
|
||
|
|
}
|
||
|
|
|
||
|
|
if( ( f = fopen( output_file, "w" ) ) == NULL )
|
||
|
|
return( -1 );
|
||
|
|
|
||
|
|
if( fwrite( c, 1, len, f ) != len )
|
||
|
|
{
|
||
|
|
fclose( f );
|
||
|
|
return( -1 );
|
||
|
|
}
|
||
|
|
|
||
|
|
fclose( f );
|
||
|
|
|
||
|
|
return( 0 );
|
||
|
|
}
|
||
|
|
|
||
|
|
static int write_private_key( mbedtls_pk_context *key, const char *output_file )
|
||
|
|
{
|
||
|
|
int ret;
|
||
|
|
FILE *f;
|
||
|
|
unsigned char output_buf[16000];
|
||
|
|
unsigned char *c = output_buf;
|
||
|
|
size_t len = 0;
|
||
|
|
|
||
|
|
memset(output_buf, 0, 16000);
|
||
|
|
|
||
|
|
#if defined(MBEDTLS_PEM_WRITE_C)
|
||
|
|
if( opt.output_format == OUTPUT_FORMAT_PEM )
|
||
|
|
{
|
||
|
|
if( ( ret = mbedtls_pk_write_key_pem( key, output_buf, 16000 ) ) != 0 )
|
||
|
|
return( ret );
|
||
|
|
|
||
|
|
len = strlen( (char *) output_buf );
|
||
|
|
}
|
||
|
|
else
|
||
|
|
#endif
|
||
|
|
{
|
||
|
|
if( ( ret = mbedtls_pk_write_key_der( key, output_buf, 16000 ) ) < 0 )
|
||
|
|
return( ret );
|
||
|
|
|
||
|
|
len = ret;
|
||
|
|
c = output_buf + sizeof(output_buf) - len;
|
||
|
|
}
|
||
|
|
|
||
|
|
if( ( f = fopen( output_file, "w" ) ) == NULL )
|
||
|
|
return( -1 );
|
||
|
|
|
||
|
|
if( fwrite( c, 1, len, f ) != len )
|
||
|
|
{
|
||
|
|
fclose( f );
|
||
|
|
return( -1 );
|
||
|
|
}
|
||
|
|
|
||
|
|
fclose( f );
|
||
|
|
|
||
|
|
return( 0 );
|
||
|
|
}
|
||
|
|
|
||
|
|
int main( int argc, char *argv[] )
|
||
|
|
{
|
||
|
|
int ret = 1;
|
||
|
|
int exit_code = MBEDTLS_EXIT_FAILURE;
|
||
|
|
#if defined(MBEDTLS_ERROR_C)
|
||
|
|
char buf[200];
|
||
|
|
#endif
|
||
|
|
int i;
|
||
|
|
char *p, *q;
|
||
|
|
|
||
|
|
const char *pers = "pkey/key_app";
|
||
|
|
mbedtls_entropy_context entropy;
|
||
|
|
mbedtls_ctr_drbg_context ctr_drbg;
|
||
|
|
|
||
|
|
mbedtls_pk_context key;
|
||
|
|
mbedtls_mpi N, P, Q, D, E, DP, DQ, QP;
|
||
|
|
|
||
|
|
/*
|
||
|
|
* Set to sane values
|
||
|
|
*/
|
||
|
|
mbedtls_entropy_init( &entropy );
|
||
|
|
mbedtls_ctr_drbg_init( &ctr_drbg );
|
||
|
|
|
||
|
|
mbedtls_pk_init( &key );
|
||
|
|
#if defined(MBEDTLS_ERROR_C)
|
||
|
|
memset( buf, 0, sizeof( buf ) );
|
||
|
|
#endif
|
||
|
|
|
||
|
|
mbedtls_mpi_init( &N ); mbedtls_mpi_init( &P ); mbedtls_mpi_init( &Q );
|
||
|
|
mbedtls_mpi_init( &D ); mbedtls_mpi_init( &E ); mbedtls_mpi_init( &DP );
|
||
|
|
mbedtls_mpi_init( &DQ ); mbedtls_mpi_init( &QP );
|
||
|
|
|
||
|
|
if( argc == 0 )
|
||
|
|
{
|
||
|
|
usage:
|
||
|
|
mbedtls_printf( USAGE );
|
||
|
|
goto exit;
|
||
|
|
}
|
||
|
|
|
||
|
|
opt.mode = DFL_MODE;
|
||
|
|
opt.filename = DFL_FILENAME;
|
||
|
|
opt.output_mode = DFL_OUTPUT_MODE;
|
||
|
|
opt.output_file = DFL_OUTPUT_FILENAME;
|
||
|
|
opt.output_format = DFL_OUTPUT_FORMAT;
|
||
|
|
|
||
|
|
for( i = 1; i < argc; i++ )
|
||
|
|
{
|
||
|
|
p = argv[i];
|
||
|
|
if( ( q = strchr( p, '=' ) ) == NULL )
|
||
|
|
goto usage;
|
||
|
|
*q++ = '\0';
|
||
|
|
|
||
|
|
if( strcmp( p, "mode" ) == 0 )
|
||
|
|
{
|
||
|
|
if( strcmp( q, "private" ) == 0 )
|
||
|
|
opt.mode = MODE_PRIVATE;
|
||
|
|
else if( strcmp( q, "public" ) == 0 )
|
||
|
|
opt.mode = MODE_PUBLIC;
|
||
|
|
else
|
||
|
|
goto usage;
|
||
|
|
}
|
||
|
|
else if( strcmp( p, "output_mode" ) == 0 )
|
||
|
|
{
|
||
|
|
if( strcmp( q, "private" ) == 0 )
|
||
|
|
opt.output_mode = OUTPUT_MODE_PRIVATE;
|
||
|
|
else if( strcmp( q, "public" ) == 0 )
|
||
|
|
opt.output_mode = OUTPUT_MODE_PUBLIC;
|
||
|
|
else
|
||
|
|
goto usage;
|
||
|
|
}
|
||
|
|
else if( strcmp( p, "output_format" ) == 0 )
|
||
|
|
{
|
||
|
|
#if defined(MBEDTLS_PEM_WRITE_C)
|
||
|
|
if( strcmp( q, "pem" ) == 0 )
|
||
|
|
opt.output_format = OUTPUT_FORMAT_PEM;
|
||
|
|
else
|
||
|
|
#endif
|
||
|
|
if( strcmp( q, "der" ) == 0 )
|
||
|
|
opt.output_format = OUTPUT_FORMAT_DER;
|
||
|
|
else
|
||
|
|
goto usage;
|
||
|
|
}
|
||
|
|
else if( strcmp( p, "filename" ) == 0 )
|
||
|
|
opt.filename = q;
|
||
|
|
else if( strcmp( p, "output_file" ) == 0 )
|
||
|
|
opt.output_file = q;
|
||
|
|
else
|
||
|
|
goto usage;
|
||
|
|
}
|
||
|
|
|
||
|
|
if( opt.mode == MODE_NONE && opt.output_mode != OUTPUT_MODE_NONE )
|
||
|
|
{
|
||
|
|
mbedtls_printf( "\nCannot output a key without reading one.\n");
|
||
|
|
goto exit;
|
||
|
|
}
|
||
|
|
|
||
|
|
if( opt.mode == MODE_PUBLIC && opt.output_mode == OUTPUT_MODE_PRIVATE )
|
||
|
|
{
|
||
|
|
mbedtls_printf( "\nCannot output a private key from a public key.\n");
|
||
|
|
goto exit;
|
||
|
|
}
|
||
|
|
|
||
|
|
if( opt.mode == MODE_PRIVATE )
|
||
|
|
{
|
||
|
|
/*
|
||
|
|
* 1.1. Load the key
|
||
|
|
*/
|
||
|
|
mbedtls_printf( "\n . Loading the private key ..." );
|
||
|
|
fflush( stdout );
|
||
|
|
|
||
|
|
if( ( ret = mbedtls_ctr_drbg_seed( &ctr_drbg, mbedtls_entropy_func, &entropy,
|
||
|
|
(const unsigned char *) pers,
|
||
|
|
strlen( pers ) ) ) != 0 )
|
||
|
|
{
|
||
|
|
mbedtls_printf( " failed\n ! mbedtls_ctr_drbg_seed returned -0x%04x\n", (unsigned int) -ret );
|
||
|
|
goto exit;
|
||
|
|
}
|
||
|
|
|
||
|
|
ret = mbedtls_pk_parse_keyfile( &key, opt.filename, NULL,
|
||
|
|
mbedtls_ctr_drbg_random, &ctr_drbg );
|
||
|
|
if( ret != 0 )
|
||
|
|
{
|
||
|
|
mbedtls_printf( " failed\n ! mbedtls_pk_parse_keyfile returned -0x%04x", (unsigned int) -ret );
|
||
|
|
goto exit;
|
||
|
|
}
|
||
|
|
|
||
|
|
mbedtls_printf( " ok\n" );
|
||
|
|
|
||
|
|
/*
|
||
|
|
* 1.2 Print the key
|
||
|
|
*/
|
||
|
|
mbedtls_printf( " . Key information ...\n" );
|
||
|
|
|
||
|
|
#if defined(MBEDTLS_RSA_C)
|
||
|
|
if( mbedtls_pk_get_type( &key ) == MBEDTLS_PK_RSA )
|
||
|
|
{
|
||
|
|
mbedtls_rsa_context *rsa = mbedtls_pk_rsa( key );
|
||
|
|
|
||
|
|
if( ( ret = mbedtls_rsa_export ( rsa, &N, &P, &Q, &D, &E ) ) != 0 ||
|
||
|
|
( ret = mbedtls_rsa_export_crt( rsa, &DP, &DQ, &QP ) ) != 0 )
|
||
|
|
{
|
||
|
|
mbedtls_printf( " failed\n ! could not export RSA parameters\n\n" );
|
||
|
|
goto exit;
|
||
|
|
}
|
||
|
|
|
||
|
|
mbedtls_mpi_write_file( "N: ", &N, 16, NULL );
|
||
|
|
mbedtls_mpi_write_file( "E: ", &E, 16, NULL );
|
||
|
|
mbedtls_mpi_write_file( "D: ", &D, 16, NULL );
|
||
|
|
mbedtls_mpi_write_file( "P: ", &P, 16, NULL );
|
||
|
|
mbedtls_mpi_write_file( "Q: ", &Q, 16, NULL );
|
||
|
|
mbedtls_mpi_write_file( "DP: ", &DP, 16, NULL );
|
||
|
|
mbedtls_mpi_write_file( "DQ: ", &DQ, 16, NULL );
|
||
|
|
mbedtls_mpi_write_file( "QP: ", &QP, 16, NULL );
|
||
|
|
}
|
||
|
|
else
|
||
|
|
#endif
|
||
|
|
#if defined(MBEDTLS_ECP_C)
|
||
|
|
if( mbedtls_pk_get_type( &key ) == MBEDTLS_PK_ECKEY )
|
||
|
|
{
|
||
|
|
mbedtls_ecp_keypair *ecp = mbedtls_pk_ec( key );
|
||
|
|
mbedtls_mpi_write_file( "Q(X): ", &ecp->MBEDTLS_PRIVATE(Q).MBEDTLS_PRIVATE(X), 16, NULL );
|
||
|
|
mbedtls_mpi_write_file( "Q(Y): ", &ecp->MBEDTLS_PRIVATE(Q).MBEDTLS_PRIVATE(Y), 16, NULL );
|
||
|
|
mbedtls_mpi_write_file( "Q(Z): ", &ecp->MBEDTLS_PRIVATE(Q).MBEDTLS_PRIVATE(Z), 16, NULL );
|
||
|
|
mbedtls_mpi_write_file( "D : ", &ecp->MBEDTLS_PRIVATE(d) , 16, NULL );
|
||
|
|
}
|
||
|
|
else
|
||
|
|
#endif
|
||
|
|
mbedtls_printf("key type not supported yet\n");
|
||
|
|
|
||
|
|
}
|
||
|
|
else if( opt.mode == MODE_PUBLIC )
|
||
|
|
{
|
||
|
|
/*
|
||
|
|
* 1.1. Load the key
|
||
|
|
*/
|
||
|
|
mbedtls_printf( "\n . Loading the public key ..." );
|
||
|
|
fflush( stdout );
|
||
|
|
|
||
|
|
ret = mbedtls_pk_parse_public_keyfile( &key, opt.filename );
|
||
|
|
|
||
|
|
if( ret != 0 )
|
||
|
|
{
|
||
|
|
mbedtls_printf( " failed\n ! mbedtls_pk_parse_public_key returned -0x%04x", (unsigned int) -ret );
|
||
|
|
goto exit;
|
||
|
|
}
|
||
|
|
|
||
|
|
mbedtls_printf( " ok\n" );
|
||
|
|
|
||
|
|
/*
|
||
|
|
* 1.2 Print the key
|
||
|
|
*/
|
||
|
|
mbedtls_printf( " . Key information ...\n" );
|
||
|
|
|
||
|
|
#if defined(MBEDTLS_RSA_C)
|
||
|
|
if( mbedtls_pk_get_type( &key ) == MBEDTLS_PK_RSA )
|
||
|
|
{
|
||
|
|
mbedtls_rsa_context *rsa = mbedtls_pk_rsa( key );
|
||
|
|
|
||
|
|
if( ( ret = mbedtls_rsa_export( rsa, &N, NULL, NULL,
|
||
|
|
NULL, &E ) ) != 0 )
|
||
|
|
{
|
||
|
|
mbedtls_printf( " failed\n ! could not export RSA parameters\n\n" );
|
||
|
|
goto exit;
|
||
|
|
}
|
||
|
|
mbedtls_mpi_write_file( "N: ", &N, 16, NULL );
|
||
|
|
mbedtls_mpi_write_file( "E: ", &E, 16, NULL );
|
||
|
|
}
|
||
|
|
else
|
||
|
|
#endif
|
||
|
|
#if defined(MBEDTLS_ECP_C)
|
||
|
|
if( mbedtls_pk_get_type( &key ) == MBEDTLS_PK_ECKEY )
|
||
|
|
{
|
||
|
|
mbedtls_ecp_keypair *ecp = mbedtls_pk_ec( key );
|
||
|
|
mbedtls_mpi_write_file( "Q(X): ", &ecp->MBEDTLS_PRIVATE(Q).MBEDTLS_PRIVATE(X), 16, NULL );
|
||
|
|
mbedtls_mpi_write_file( "Q(Y): ", &ecp->MBEDTLS_PRIVATE(Q).MBEDTLS_PRIVATE(Y), 16, NULL );
|
||
|
|
mbedtls_mpi_write_file( "Q(Z): ", &ecp->MBEDTLS_PRIVATE(Q).MBEDTLS_PRIVATE(Z), 16, NULL );
|
||
|
|
}
|
||
|
|
else
|
||
|
|
#endif
|
||
|
|
mbedtls_printf("key type not supported yet\n");
|
||
|
|
}
|
||
|
|
else
|
||
|
|
goto usage;
|
||
|
|
|
||
|
|
if( opt.output_mode == OUTPUT_MODE_PUBLIC )
|
||
|
|
{
|
||
|
|
write_public_key( &key, opt.output_file );
|
||
|
|
}
|
||
|
|
if( opt.output_mode == OUTPUT_MODE_PRIVATE )
|
||
|
|
{
|
||
|
|
write_private_key( &key, opt.output_file );
|
||
|
|
}
|
||
|
|
|
||
|
|
exit_code = MBEDTLS_EXIT_SUCCESS;
|
||
|
|
|
||
|
|
exit:
|
||
|
|
|
||
|
|
if( exit_code != MBEDTLS_EXIT_SUCCESS )
|
||
|
|
{
|
||
|
|
#ifdef MBEDTLS_ERROR_C
|
||
|
|
mbedtls_strerror( ret, buf, sizeof( buf ) );
|
||
|
|
mbedtls_printf( " - %s\n", buf );
|
||
|
|
#else
|
||
|
|
mbedtls_printf("\n");
|
||
|
|
#endif
|
||
|
|
}
|
||
|
|
|
||
|
|
mbedtls_mpi_free( &N ); mbedtls_mpi_free( &P ); mbedtls_mpi_free( &Q );
|
||
|
|
mbedtls_mpi_free( &D ); mbedtls_mpi_free( &E ); mbedtls_mpi_free( &DP );
|
||
|
|
mbedtls_mpi_free( &DQ ); mbedtls_mpi_free( &QP );
|
||
|
|
|
||
|
|
mbedtls_pk_free( &key );
|
||
|
|
|
||
|
|
mbedtls_ctr_drbg_free( &ctr_drbg );
|
||
|
|
mbedtls_entropy_free( &entropy );
|
||
|
|
|
||
|
|
#if defined(_WIN32)
|
||
|
|
mbedtls_printf( " + Press Enter to exit this program.\n" );
|
||
|
|
fflush( stdout ); getchar();
|
||
|
|
#endif
|
||
|
|
|
||
|
|
mbedtls_exit( exit_code );
|
||
|
|
}
|
||
|
|
#endif /* MBEDTLS_PK_PARSE_C && MBEDTLS_PK_WRITE_C && MBEDTLS_FS_IO &&
|
||
|
|
MBEDTLS_ENTROPY_C && MBEDTLS_CTR_DRBG_C */
|